Metropolitan Washington
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AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action DayAction Day
Local Air Quality Resources
Action Day Programs | Forecast
State Air Quality Resources
American Lung Association (ALA) of the District of Columbia
District Department of the Environment
District Dept. of the Environment - Contacts
District of Columbia - Emergency Management Agency - Air Quality Indexes
Metropolitan Washington Council of Governments - Air Quality Information is undergoing maintenance. Updates for the forecasts and current conditions are not available between midnight and 4 am EST.

Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
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AQI - Pollutant Details
Particles (PM2.5)
Data Not Available
Forecast Discussion: High pressure is in full control through the weekend promoting weakening winds and mainly sunny skies. On Saturday, northerly winds persist east of the mountains while winds slacken elsewhere. Good air quality will continue with the clean and dry airmass in place. With generally lower emissions on Sunday and some cloud cover expected, Good air quality should persist for most of the state. The exception may be the Hagerstown area, where local emissions may keep particle pollution just above the Moderate threshold. With the new work week and for some a new school year on Monday, higher local emissions may be just enough to push the I-95 corridor into the Moderate ozone range, but otherwise generally good air quality will persist. - MDE

Current Conditions
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